2149957

Information

• Patent Grant
• 2149957

• References
• Source

• Patent Number

  2,149,957

• Date Filed

  Not available

• Date Issued

  Tuesday, March 7, 1939
  85 years ago

• CPC

  • E01B2/006 - Deep foundation of tracks
  • E02D29/0216 - Cribbing walls

• US Classifications

  • 405 - Hydraulic and earth engineering